Jquery not working?

EDIT: It was a jquery version conflict, thanks very much guys, is working flawlessly now!!

I guys,

i'm trying to hide a div using the jquery framework, i am calling the function like this:

<script type="text/javascript" src="http://code.jquery.com/jquery-1.5.js"></script>

<script type="text/javascript">

jQuery(document).ready(function() {
  jQuery('#pagex').hide();
});
</script>

The pagex div is showing though...

The source code:

<div id="bigslider">

          <div id="slider-wrapper">
                      <div id="slider" class="nivoSlider">
  <img src="images/sliderman/iloja1.jpg" alt="" />
  <a href="http://iloja.pt"><img src="images/sliderman/iloja2.gif"/></a>
  <a href="capas-acessa-rios/cat_7.html"><img src="ima开发者_开发知识库ges/sliderman/iloja3.jpg" /></a>

              </div>
 </div> 


<div id="pagex">
  <div class="repassist">reparacao</div>  <a class="icon1" href="#teste">iphone2g</a>  <a class="icon2" href="#LinkURL">iphone3g</a>  <a class="icon3" href="#LinkURL">iphone3gs</a>  <a class="icon4" href="#LinkURL">iphone4</a>  <a class="icon5" href="#LinkURL">ipadwifi</a>  <a class="icon6" href="#LinkURL">ipad3g</a>  <a class="icon7" href="#LinkURL">ipad2wifi</a>  <a class="icon8" href="#LinkURL">ipad23g</a>
     </div>

     </div>     
</div>

Should be working, but i must warn that i am doing this inside cubecart cms/store, and the template is calling an older javascript.

Works like a charm for me > http://jsfiddle.net/4mNrs/